129015412879 has 16 divisors (see below), whose sum is σ = 131415812640. Its totient is φ = 126633024000.

The previous prime is 129015412849. The next prime is 129015412907. The reversal of 129015412879 is 978214510921.

It is a cyclic number.

It is not a de Polignac number, because 129015412879 - 2¹¹ = 129015410831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129015412849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29259627 + ... + 29264035.

It is an arithmetic number, because the mean of its divisors is an integer number (8213488290).

Almost surely, 2^129015412879 is an apocalyptic number.

129015412879 is a deficient number, since it is larger than the sum of its proper divisors (2400399761).

129015412879 is a wasteful number, since it uses less digits than its factorization.

129015412879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6330.

The product of its (nonzero) digits is 362880, while the sum is 49.

The spelling of 129015412879 in words is "one hundred twenty-nine billion, fifteen million, four hundred twelve thousand, eight hundred seventy-nine".